Well, I jumped the gun on my assessment of the frost damage.  Upon further inspection this afternoon, it seems many of the tomatoes did get zapped by the cold temps, despite the cover.  The peppers and squash still looked okay, but a lot of the tomatoes looked wilted and dark.

I pulled a couple of bushels of green ones, and left probably a couple more bushels worth on the vines still under cover.  I’ll gather those tomorrow.  Guess it’s time to search for some green tomato recipes…

Row cover wasn't quite enough

One interesting thing I noticed about Tom’s squash plants, which were not covered: while many of the older leaves clearly couldn’t handle the frost and had died, it looked like the newer leaves came through fine.  Hmm.

Older leaves died

New ones survived